Abstract
Due to the limitations of the urban environment, the data transferred between vehicles can only change direction at the intersections. Therefore, the routing decision at an intersection will largely affect the overall routing decision. In this article, we propose an Intersection-Based Routing with Fuzzy Multi-Factor Decision (IRFMF), which utilizes several factors to decide the next road segment. In the scheme, each intersection introduces three factors including the direction, the number of lanes, and the traffic. After the fuzzification and defuzzification of these factors, the candidate segment with the highest evaluation will be selected. The simulation shows a significant improvement of VANETs performance on packet delivery ratio and end-to-end delay.
Highlights
The Vehicular Ad hoc Network (VANET) is created by applying the principles of the Mobile Ad Hoc Networks (NANETs) to the vehicle, which is an important part of the Intelligent Transportation System (ITS) framework [1,2,3].VANET can be regarded as a special practical application of wireless ad hoc networks (Ad Hoc Network)
The above content shows the process of the routing protocol we proposed in detail, and its brief flow is as follows: Step 1: The roadside unit (RSU) periodically sends a link discovery beacon to determine and establish a link between it and its neighbors based on the information of the beacon message
The routing decision is determined at intersections by the RSU using the Triangular Fuzzy Number (TFN) combined three factors including the number of lanes, direction, and the traffic flow
Summary
The Vehicular Ad hoc Network (VANET) is created by applying the principles of the Mobile Ad Hoc Networks (NANETs) to the vehicle, which is an important part of the Intelligent Transportation System (ITS) framework [1,2,3]. VANET can be regarded as a special practical application of wireless ad hoc networks (Ad Hoc Network). Vehicle routing decisions largely depend on the data forwarding decisions at the intersection; the data forwarding decision at the intersection determines the forwarding direction and the road section of the data in the stage, which affects the data delivery rate and delay rate of the overall routing, and it affects the quality of the routing decision. It can be said to a large extent that the decision of intersection data forwarding determines the overall routing
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